Home / 140,249,681.87-193,540,848.32-78,370,528.91

Finding the Fourth Proportional to 140,249,681.87, 193,540,848.32 and 78,370,528.91

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Solution

The fourth proportional to 140,249,681.87, 193,540,848.32 and 78,370,528.91 is: 108,149,255.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,249,681.87 : 193,540,848.32 = 78,370,528.91 : x
  2. Step 2: Convert to fraction form
    140,249,681.87/193,540,848.32 = 78,370,528.91/x
  3. Step 3: Cross multiply
    140,249,681.87x = 193,540,848.32 × 78,370,528.91
  4. Step 4: Simplify right side
    140,249,681.87x = 15,167,898,647,756,706
  5. Step 5: Solve for x
    x = 15,167,898,647,756,706/140,249,681.87
  6. Step 6: Final answer
    x = 108,149,255.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.